Abstract: A jib crane which can prevent an unexpected movement of a burden and can sufficiently ensure the safety of a burden handling work is disclosed. The jib crane has hoisting wire ropes for lifting and landing a hook, derricking wire ropes for derricking operation of a jib, and a conversion device for fixing tips of the wire ropes to a revolving frame of a revolving table. The conversion device has a V-shaped link pivotally supported on a bearing bracket via a pivot pin. The tips of the wire ropes are connected to paired link arms of the V-shaped link.

Abstract: A jib crane is provided which can prevent an unexpected movement of a burden and can sufficiently ensure the safety of a burden handling work. The jib crane has hoisting wire ropes 22 for lifting up and down of a hook 34, derricking wire ropes 24 for derricking operation of a jib 14 and a conversion device 38 for fixing tips of the wire ropes 22 and 24 to a revolving frame 58 of a revolving table. The conversion device 38 has a V-shaped link 62 pivotally supported on a bearing bracket 56 via a pivot pin 60. The tips of the wire ropes 22 and 24 are connected to paired link arms 62a and 62b of the link 62.